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Electrical and Electronics Engineering MCQs | Page - 24

Dear candidates you will find MCQ questions of Electrical and Electronics Engineering here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.

M

Mr. Dubey • 51.47K Points
Coach

Q. 231) For I.M. running with 1440rpm with slip of 4% the synchronous speed of rotating magnetic field

(A) 750
(B) 1000
(C) 1500
(D) 500
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M

Mr. Dubey • 51.47K Points
Coach

Q. 232) For I.M. running with 970rpm with slip of 3%, the synchronous speed of rotating magnetic field

(A) 750
(B) 1000
(C) 1500
(D) 500
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M

Mr. Dubey • 51.47K Points
Coach

Q. 233) A 6pole ,3 phase 50Hz I.M is running with 970 rpm. The slip of I.M is

(A) 0.03
(B) 0.05
(C) 0.02
(D) 0.01
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M

Mr. Dubey • 51.47K Points
Coach

Q. 234) A 8 pole ,50Hz ,3phase I.M ,If full load slip is 2.5%. Rotor speed is

(A) 200
(B) 731
(C) 600
(D) 1000
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M

Mr. Dubey • 51.47K Points
Coach

Q. 235) A 8pole ,3 phase 50Hz I.M is running with 731.25 rpm. The slip of I.M is

(A) 0.0256
(B) 1.975
(C) 0.025
(D) none of the above
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M

Mr. Dubey • 51.47K Points
Coach

Q. 236) A 6pole ,3 phase 50Hz I.M is running with s=3%,runs with

(A) 200
(B) 600
(C) 1000
(D) 970
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M

Mr. Dubey • 51.47K Points
Coach

Q. 237) A 3-phase slip-ring induction motor has ……………… rotor.

(A) short circuited
(B) wound
(C) squirrel cage
(D) double cage
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M

Mr. Dubey • 51.47K Points
Coach

Q. 238) A wound rotor induction motor can be distinguished from a squirrel cage induction motor by

(A) presence of slip-rings.
(B) frame size
(C) shaft diameter
(D) any of the above
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M

Mr. Dubey • 51.47K Points
Coach

Q. 239) The operation of an induction motor is based on

(A) len\s law
(B) ampere law
(C) principle of mutual induction
(D) principle of self induction
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M

Mr. Dubey • 51.47K Points
Coach

Q. 240) The rotating magnetic field produced by stator currents rotates at

(A) synchronous speed , ns
(B) rotor speed n
(C) speed = ns - n
(D) a speed higher than synchronous speed
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